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Auto ppt: the meter automatically chooses the range to optimize the measurement, readings will be in
ppt only.
1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt or 1 ppt: the meter will display the measurement with
selected resolution. The default value is Auto.
GPS Format (optional)
Global positioning coordinates have three standard formats:
XX°XX’XX.X, XX°XX.XXX’ and XX.XXXXX°. The selected format
will be used in any screen where the GPS coordinates are
displayed. The default format is XX°XX’XX.X.
EC Reference Temperature
This value is used for temperature compensated conductivity.
All EC measurements will be referenced to the conductivity of
a sample at this temperature. Press the softkey to select the
desired option; 20 °C or at 25 °C. The default value is 25 °C.
EC Temperature Coefficient
The temperature coefficient Beta (
β) is defined by the following
equation (using 25 °C as an example):
EC
25
=EC
x
/(1+β(T
x
‑25))
Beta is a function of the solution being measured.
For freshwater samples Beta is approximately 1.90%/°C. If the actual temperature coefficient of your
sample is known, press <Modify> to enter the value. T
o confirm press <A
ccept>. The value can
be within 0.00 and 6.00%/°C. The default value is 1.90%/°C.
TDS Factor
TDS stands for total dissolved solids, and it is a calcu‑
lated value based on the conductivity of the solution
(TDS = factor x EC
25
). The TDS conversion factor can be set
from 0.00 to 1.00. A typical TDS factor for strong ionic solu‑
tions is 0.50, while for weak ionic solutions (e.g. fertilizers) is
0.70. Press <Modify> to enter the value, press <Accept> to confirm. The default value is 0.50.
PARAMETER COEFFICIENTS
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